Automatic eaiewat switch



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I AUTOMATIG RAILWAY SWITCH.

No. 513,781.. Patented Jan. 30,1894.

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(No Model.) 2 Sheets-Sheet 2. D. B; HART. AUTOMATIG RAILWAY SWITGHPatented Jan. 30,1894.

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UNITED STATES PATENT IFFICE.

DAVID B. HART, on NEW YORK, N. Y.

AUTOMATIC RAILWAY-SWITCH.

SPECIFICATION forming part of Letters Patent No. 513,781, dated January30, 1894. Application filed October 7, 1893. Serial No. 487,407. (Nomodel.)

To all whom it may concern.-

Be it known that I, DAVID B. HART, of the city and county of New York,and State of New York, have invented a new and usefulImprovementinAutomaticRailway-Switches,

of which the followingis a full, clear, and eX-' plicity, certainty ofoperation, ease in workmg, and cheapness combine to render it a valuableimprovement upon any hitherto devised.

For the better understanding of my invention, I have prepared theaccompanying drawings to which reference is hereinafter made.

In the drawings similar letters represent like parts.

Figure l is a plan view, showing the rails, switch and operating device.Fig. 2 is a vertical longitudinal section of the same. Fig. 3

/is a plan view of the under side of the operthe line 6-6 of Fig. 4.Fig. 7 is a vertical section on the line of 7-7 of Fig. 5.

Figs. 8 and 9 show an alternative form.

As will be seen, my device consists as hereinafter described and claimedof a switch point operating device set-in the ground and so arrangedthat rods carried on the front platform of a car may be brought to bearupon curvedthrusting levers adapted to receive them, whereby the switchpoint is moved to the right or left as may be desired.

In the drawings, A A are the rails of the main track; A A of theturn-out.

B; is the solid frog or plate which is firmly fixed on the side oppositethe direction of the turn-out.

B is the movable switch point which opens or closes the siding.

(lis the solid cam which is rigidly united with the point B and liesdirectly beneath it. This cam O is provided with the inclined faces 0and c which are acted upon by the push rod D. D.

E. is the bed plate on which B and O are pivoted and the outer side ofwhich serves as the rail for the siding when opened.

H H are the curved thrusting levers which actuatethe rods D D. Theselevers are so curved that their upper portion projects above the levelof the bed plate F. The pivots h h support these lovers in the bed plateF, and the pins 75 7t connect them with the rods D D. The springs d d,which are fastened to the bed plate F by the bolts 61 (1 return thelevers H H to their position in contact with the plate F after they havebeen depressed by the rods J or J.

The rodsJ J are secured inthe platform P of the car between the plates19 and p which are united by the bolts M M. They are united by thedouble armed lever S so that the depression of either rod by the cam Lwill cause the other to be raised correspondingly.

G. is the handle which is rigidly fastened to the vertical shaft g, towhich the carnLis fastened. This cam is so arranged that its bearingsurfaces act against the ends of the depressing rods J J and projectthem downward. The rollers j j lessen the friction of the contact withthe curved levers. In the alternative form, I substitute a cross yoke cor lever in the place of O and pivot the curved levers H at It so thatwhen depressed they thrust out the rods D through the interven- 5 Theoperation of my device is as follows:

As the car approaches the siding, the person in charge moves the handleso that the cam L shall depress the rod desired. When the car reachesthe curved levers H and H the roller j or j will come in contactwith thelever inalternate lever mustbe depressed and the switch point movedaccordingly.

I have. given two forms of construction of my device, but other slightchanges in the details might be made without departing from the spiritof ,my invention.

.Having thus set forth my invention, what .Lclaim asnew, and desire tosecure by Letters Patent of the United States, is-

.1. .Thccombination with a movable switch point of a subjacent leverrigidly united thereto, and provided with inclined faces, .cnrved.thrust levers projecting above ;the .plane 0f& the bed plate in whichthey are pivoted,,and suitable rods connected withthe same and adaptedto operate against the said inclined faces, substantially as described.

. 2. The, combination with tracks for street cars of a movable switchpoint, ,a lever rigidly united to said point and provided with inclinedfaces, wedge acting rods adapted to act against said faces and meanswhereby such rods may be operated from the platform of a car locatedupon said tracks, substantially as described.

3. The combination with a movable switch point of alever rigidly unitedthereto and provided with inclined faces, curved thrust leversprojecting above the plane of the bed plate in whichithey are pivotedand wedge acting rods connected at one end with such. levers and adaptedat their other ends to operate against the said inclined faces,substantially as described.

4. The combination iWilBll a movable switch point provided withtasubjacent lever rigidly united thereto .and provided with inclined facesof-wedgeacting thrust rods-adapted to operatezagainstisaid faces, thrustlevers connected with said rods, operating 'rods :arranged upon :a car,platform-and adapted to operate said thrust levers, and mechanism} foroperating said Prods, substantially as described.

DAVID B. IIIART.

Witnesses:

T. D. I-Ioncns, -SALMER COVHIP.

